Cover for battery-jars.



In. 658,860. Patented 0ct. 2, |900. P. P. NUNGESSER.

COVER FOR BATTERY JARS.

(Application led Feb. 13, 1900.)

(No Nudel.)

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PHILIP P. NUNGESSER, OF CLEVELAND, OHIO, ASSIGNOR TO THE NUNGESSER ELECTRIC BATTERY COMPANY, OF SAME PLACE.

COVER FOR BATTERY-JARS.

SPECIFICATION forming partof Letters Patent N o. 658,860, dated October 2, 1900. Application filed February 13, 1900. Serial No.- 5,068. vtNo model.)

T r11/ZZ wwm t may 00u/067%: [known or used a construction which ap- Be it known that I, PHILIP P. NUNGESSER, a proaches to the present invention in principle citizen of the United States, residing at Cleveor operation. Assuming then that the jar land, in the county of Cuyahoga and State of itself is not new and may be variously shaped 5 Ohio, have invented certain new and useful and used,`I` employ therewith a novel cover Improvements in Covers for Battery-Jars; constructed,ashereshown,withaslight ange and I do declare that the following is a full, or rim 2, which rests on the edge of the jar. clear, and exact description of the invention, The said cover is otherwise of sufficient depth which will enable others skilled in the art to for the further purposes of my invention, 6o 1o which it appertains to make and use the same. and below its rim or liange 2, in what consti- My invention relates toimprovements in tutes its body, has two diameters 3 and 4. covers for battery-jars and in the means for The upper and larger diameter practically securing the cover on the jar and other feafills the top of the jar, while the lower diametures, all substantially as shown and deter is materially smaller, and an inclined I 5 scribed, and particularly pointed out in the shoulder or offset 5 separates the said diameclaims. ters. This construction of what is properly In the accompanying drawings, Figure lis the edge of the body of the cover really forms a perspective elevation of a jar havinga cover an annular recess between the lower portion constructed with my improvements. Fig. 2 of the cover and the inside of the jar, with an 7o zo is a vertical sectional elevation on line 2 2, inwardly and downwardly inclined top por- Fig. 1. Fig. 3 is an elevation of one of'the tion 5, formingan outwardly-wedgingsurface cover-tightening bolts and its attachments. for the flexible and elastic packing-ring D, Fig. 4 shows an edge elevation of a brokenwhich occupies said recess. A desirable off partof the cover to disclose the shape shape of ring D for this recess is shown in 25 thereof. Fig. 5 shows a view of a section or Fig. 5, though the normal shape of the ring fragment of the packingring, and Fig.- 6 is not in itself material as long as it answers shows a like fragment of the tightening-ring my purpose, and it is of a size and shape to for the packing. Fig. 7 shows a small secbe placed around the lower portion of the tional elevation of the cover with a soft-ruhcover, and thus inserted into thejar, but after 8o 3o berbushing therein adapted to receive one of first having placed in position the clampingthe battery elements, all as hereinafter fully ring E. This ringnis shown here as L-shaped described. in cross-section, with threaded eyes 6 here A represents the battery-jar, which, so far and there through its lower portion for the as this invention is concerned, may be of any clamping-screws F,inserted down through the 35 suitablev kind of material and of any precover from above. The holes for the said ferred shape or size and for primary or secscrews are countersunk at their top, and on ondary battery uses. So, also, may the cover the screws next to the said countersunk cav- C be of any suitable material and adapted ities are soft rubber or equivalent washers 7 to any shape or kind of battery, the use itself and next above these are metallic washers 8. 9o 4o not being involved in the invention. In this Four screwsFandtheirequipments are shown instance, however, a primary cell is shown, here, but there may be two or more, as may In portable batteries particularly, as well be wanted, and the threaded eyes 6 serve the as in some others, it is desirable to have a perpurposes of nuts in the present construction. fectly-sealed jar, so that neither liquid nor Areverse of this mightbe used with the screw- 45 gas can escape nor air enter the jar. To the heads below and nuts at the top or any equivend that these results may be secured there alent arrangement. Now, having these sevhave been many and varied means resorted eral parts in position relatively, as seen in to from time to time, as is now well known in Fig. 2, but as yet untightened, the packing D this art and with varied success, but notwithwill be uncompressed and the cap can be put roo 5o standing all that has been done in this line on and taken off with all the lparts united.

I am not aware that any one has ever before However, as soon as the screws F are tightcned, so as to compress the packing and lock and seal the cover, the packing is forced up against the outward incline 5 into perfect sealing relation therewith and with the wall of the jar, which is opposite, and there is also a close inward-spreading pressure against the wall 4 of the reduced portion of the cover. The eect of this is to not only close the jar against possible leaking about the edge of the cover, but to set up a tendency through the rubber as it lies under compression to pull the cover down ward in the jar rather than to crowd it upward. Meantime the tightening of screw F also crowds the rubber washers 7 down into the countersunk cavities c and perfectly seals the screw-passages against escape of iiuid or gas in this direction. Therefore, so far as leakage of any kind from within the jaris concerned, the jaris as effectually sealed as if it were all in one piece, and the cover is so firmly held in place that it simply cannot be dislodged without breaking it into pieces. This is in part true, because the rubber packing so engages against the wall of the jar and the reduced edge of the cover as to cause a downward pressure or pull on the cover, as is easily verified by tests when the rubber is only partially tightened.

Another part of the invention lies in the method or manner of securing the elements or electrodes in the cover. Hitherto in batteries of this general character there has been much trouble by reason of the elements, or, rather, the stems G thereof, breaking off just below the cover C. These stems usually are of heavy copper wire, and the agitation to which the battery is subjected in a traveling vehicle very quickly tells on the stein, crystallizing the same just below the cover and causing it to snap off. This is calculated to bring much embarrassment to the user, especially if he be out 011 the road away from possible repairs. Hence the present invention, wherein I employ a soft-rubber tube or sleeve 9, through which the wire or rod G is inserted through the cover C as shown, and nuts 11 and 12 on said rod bear on soft-rubber washers 13 and 14, and hard washers 15 and 16, respectively, top and bottom of the cover at the ends of sleeve 9. A cavityc is also preferably formed at top of hole for said wire or rod in the cover C, into which there is such compression of the upper extremity of sleeve 9 when the screw 11 is tightened, as well as tightening up of the washers, that there can be no possible leakage in this direction. A

perfect seal of the cover C is thus made at all points, and the rods G are so protected at what is otherwise their place of weakness just below the cover that no crystallization at all occurs therein and they serve indefinitely without danger. Suitable soft-rubber thimbles inserted above and below might substitute the present tube 9 and rubber washers 13 and 14, but the construction shown is preferred.

H represents a vent-nipple on the cover, having a rubber vent-cap h or its equivalent to afford a high-pressure outlet for accumulating gases or the likeI which might endanger the jar by explosion if an escape were not provided.

What I claim is- 1. A jar having an even smooth interior surface about its top, a jar-cover having a relativelyreduced annular lower portion seated therein, packing about said lower portion, a clamping-ring bearing against the bottom of said packing and bolts through the cover threaded into the inner edge of the said clam ping-ring to tighten the ring against the packing, in combination with battery elements in the jar and connections therewith through said cover,substantially as described.

2. In electric batteries, a jar-cover having an annularly-reduced lower portion, a packing-ring about said lower portion, a clamping-ring bearing upward against said packing-ring, screws through the cover engaging said clamping-ring and battery elements having their connections through said cover, substantially as described.

3. In battery-jars, a jar-cover, a packingring about its bottom portion and a clamping-ring therefor substantially right-angled in cross-section and tightening-screws en gaging said ring through the cover, substantially as described.

4. In battery-jars, a jar-cover and a packing-ring about the edge thereof, a clampingring substantially L-shaped in cross-section to engage said packing-ring and screws at different places through the cover engaging said rings, substantially as described.

5. In electric batteries, a cover having a series of holes through from top to bottom countersunk at their top, in combination with a clamping ring below the cover, screws through said holes engaging said ring, and compressible washers about the tops of said screws in countersunk portions of said holes, substantially as described.

Witness my hand to the foregoing specification this 6th day of February, 1900.

PHILIP P. NUN GESSER.

Witnesses:

H. T. FISHER, R. B. MOSER.

IIO 

